Bag-sealing machine



Oct. 25, 1927. 1,646,397

J. FRANK BAG SEALING MACHINE Filed July 26, 1926 2 Shoots-Shut 1 5x Z I AZ I @Zius [Fafz/g I 3% 7M dig .5

Oct. 25, 1927. J. FRANK v I BAG SEALING MACHINE 7 Filed Jullv 2a. 1926 2 Sheets-Shut 2 1820 Z1 /Z .39 3 1 m u A 3 v E i I. 1y 1 5 1 I 1| If! ,ig) o o I 1 ll U 16 J5 J6 J5 liwenib'rz J lius Funk.

40 disk; also a third disk constantly Patented Oct 25, 1927,,

JULIUS rmx, or cnrceco, rumors. v

BAG-SEALING MACHINE.

v Application filed July 26,

This invention relates to a machine which] will fold the flap or free end portionof a container in the form of a bag, upon the body portion. thereof, at the same tlme applying a suitable area of adhesive to one of the two side portions, and thereafter press the portions together under conditlons whlch Wlll cause them to adhere and eilectlvely close the container;vand the invent on has for its object to provide an improved and more efiicient and reliable apparatus for performing this operatic The invention proceeds upon the prmclple of providing traveling aprons or belts, upon 1 and between which the container to be closed andsealed, can be placed in uprlght posltion, and by which the container will automatically fed past an adhesive applymg dGVlCQ, then through a folding device, andfinally 0 between pressing rolls; one of said traveling I members being mounted in a horlzont'al plane to afford vertical support to the container, and the others traveling 1n convergmg paths, around ,a pair of vertically, pres 'ented pulle s, receive the container between them hand old it I n" t osition. 0

nig s COEIIPIlSQS a pair of d sks revolv ng some with opposite sides of that portion 8 26f the container to which the adhe1V8 1S to applied, one of said dISkS constitutm a ainstv tipping from its vehicle for applying adhesive and the ot er" servin to sustain the container in contact with t e applying disk; the sustaining disk 1 85 being hollow or concave on its'periphery er and therefore renders it more rigid against 1 flexing under the pressure of the aglplying pp in a receptaclecontain' adhesive, arrange to revolve upon an axisperpendicular to those of the disks first 'named, and present to the adhesive disk ,a measured supply of adhesive determined by the restricting capacity of a jscra er with which the supply disk co-acts be ore reaching. the adhesive applyin disk. The folding means is n the form 0 a pair of curbs or. rails between which that portion of the container, ncluding the edges of theifree end,-wh 1ch s concerned-.with the closure to be effected, s made to. pass; one of said rails having a deflecting flange which gradually changes from a merehorizontally inclined edge, mto

downward presentation or Figures5"and 6 being on e adhesive applying 7 by link belt 5 from a shaft "6 of which is on-the made to conver 1928., Serial n. 124,925.

an overhanging portion and then into agrooved or inverted U-sha ed portion, one depending wall of whicli completes the folding of the free end of the receptacle and presents it in. 00 position to be creased by the. finishing rolls. The invention consists in certain novel features of construction hereinafter fully explained and particularly pointed out in the claims. 85 In the accompanying drawings which 1 the preferred embodiment of the invention is shown by way of illustration,

. Figure v1 isa top plan viewpf a sealing machine embodying the several features of the invention; Figure 2 is aside elevation of thesame; Figures 3, 4,51and 6 are vertical'transverse sections taken respectively on the lines 3"-'-3", 4*4*, X and '6*6" of Figures'l and 2, an enlarged scale; view of onev of the Figure 7 is a detail folding curbs; and v Figure 8 is a detail view of one of the containers after the closureis completed. '1 represents an endless apron, mounted in Y a horizontal plane upon the idle guidi 1 rollern2 and the. driving roller 3, whic latter is on a shaft 4 constantly driven I which is in turn. driven through worm wheel v7 and worm 8 by a pulley ,9 which receives its' drive from anyx'suitable source of power," such for instance as an electric motor 10. 11. represents a pair of vertical belts guided by the idle rollers 12, and by driving rolls 13 on shafts 14; and 15 which are geared together at 16, and one of which, for instance shaft 14, is continued downward and con-- nected through miter gear 17 one gear wheel shaftfi already referred to. Belts 11 while spaced apart by the rollers l2,at the intake end of the machine, are

e so that the container A, in the form of a' a or envelope placed upon the atpronand gui ed in between said belts, woul be gripped and caused to pass through the machine. f

'18 represents the sustaining disk, 19 the applying disk -of an adhes ve supplyin means, mounted respectively upon vertical spindles 20 and 21 carrying sprockets 22 and 23 which are driven by chains 24 and'25 fromsprocke'tsi26 and 27 on the shafts. 14

and 15 already-referred to. Applying di k 11o 19 revolves in constant contact with the sup means in the path of the bag, and in position ply disk 28 which dips into adhesive receptacle 29 and constantly carries adhesive to the applying disk, but only after the contacting portion of the supply disk passes through the slot of a, scraper 30 the width of which slot is proportioned to preventan gnclgss of adhesive reaching the' applying 31 and 32 represent the rails of a folding device, which rails, as shown more clearly in Figure '6, embody in their construction vertical Webs 31 and 32. Rail 31 is fashioned to provide a'horizontal flange '31 which projects across the upper edge of the rail 32, also a depending flange 31. The horizontal flange 31 commences at the intake end of the folding device with a mere deflecting edge 31 and merges thence into the horizontal flange 31 so that the upstanding flap or.

free end of the container will be gradually deflected from vertical to horizontal position and then from horizontal to folded osition, which is shown in Figure 6. With t 1e parts of the container in this position, the part.

bearing the adhesive will occupy about the position X sothat if the, container be now passed between the finishing rolls 33, and the folded parts of the container pressed together, a sealed closure of the container will have been completed. As shown in Figure 7, the rail32 is constructed at its rear end with a longitudinal recess 32 in position to avoid contact with the adhesive as the folding is completed. Finishin rolls 33 are mounted on the shafts 14 and 15 just above the driving pulleys 13 of the feed pulleys 11' and the area of the container which is concerned with the formation of its closure is all above the horizontal plane of s'aiddriv-- in pulleys 13. 7

Vith an apparatus constructed as described, envelopes or bags A placed upon the endless apron 1 and manually sustained until they pass in between the feed belts 11 will be gripped by said pulleys at a level well below any portion of the container which is concerned with the formation of its closure, and by said pulleys fed past the adhesive applying means, then through the folding means, and finally to the finishing.

rolls when the folding and adhering of the closure-forming portions of the container as well as their compression into adhering relation will have been complete, and the result-ant package will be ready for shipment.

I claim: 7

1. ha machine for sealing bags, means afi'ording vertical support" to a bag to be sealed, a pair of feed beltsmounted to receive a bag between them and adapted to i grip the bag and convey it throu h the machine in an upright position, .wit the portions of the bag to be folded and adhered pro-- jecting above said belts, adhesive applying to apply adhesive to a portion thereof above the belts, and folding and pressing means in position to act upon the bag in the order named after it passes the adhesive applying means.

2. In apparatus for sealing bags, means affording vertical support to a bag to be sealed, a pair of belts embracing said bag on opposite sides and sustaining it in an upright position while feeding it through the whichbags are passed by said belts, one of which disks is provided with means for keeping its marginal portion supplied with adhesive, folding means located to engage portions of the bags above said belts,.after the bags pass the adhesive applying means,-

and means for pressing together folded portions of the bags after they leave the fold ing means.

4c. In a sealing machine for bags, means for feeding bags in upright position through the machine, adhesive applying means, and folding and pressing means; the adhesive applying means comprising-a pair of horizontal disks in position to impinge against opposite sides of the bags, a vertical disk impinging against the periphery of one of said horizontal disks, and means for supplymg a measured quantity of adhesive tosai'd supplying disk.

5. In' a sealing machine for bags, means for feeding bags in upright position through the machine, adhesive applying means, and folding and pressing means; the, adhesive applying means comprising a pair of horizontal disks in position to impinge against opposite sides of the bags, a vertical disk impinging against the periphery of one of said horizontal disks, and means for supplymg a measured quantity of adhesive to said supplying disk; said last named means comprising a receptacle for adhesive into which the vertical disk dips, a scraper which said vertical disk encounters after leaving the adhesive in said receptacle.

6. In a machine for sealing bags, means for feeding a bag in upright position through the machine, adhesive applying means positioned to encounter said bag as it passes through the machine, and folding and pressing rolls also in position to act upon the bag;

Ill-

Ill

the adhesive applying means comprising a pair of horizontal disks co-acting on opposite sides from the bag, one of said disks having a hollow periphery adapted to develop a groove in the bag and the' other of said disks having means supplying adhesive its periphery.

7. In a machine for sealing bags, endless belt means for passing a bag in upright po: sition through the machine, said endless belt-means being restricted in its contact with the bags to a level below the sealed portion of the bags, and fiolding means lo cated to encounter the portion of the bag which is above the level of said endless beltmeans in its passage through the machine; said folding means comprising a pair of rails between which the bag passes and a folding flange encountering the portion of the bag which extends above said rails and which embodies in its construction a deflected portion, a horizontal portion and a depending portion merging from one into another in the order named and which are machine; said machine also also above the level of said endless beltmeans.

8. In a machine for sealing bags, means for passing a bag in upright position through the machine, and folding means all of which portions are above' the level of the means for passing the ba through the 4D aving a pair I of coacting pressing rolls also above saidlevel and impinging on opposite sides of the folded portion of the bag as it leaves the folder.

Signed at Chicago, Illinois, this 21st day of July, 1926.

JULIUS FRANK. 

